This good sign I think. There is a chance to gain some extra weight. The better solution is to take some other foods to prevent your appetite.
Hmm, you may have some deficiencies which could be associated with PICA and also increasing your appetite.
The new job could have caused some added stress and/or anxiety, which could be a factor.
You should be checked for deficiencies, like iron, hemoglobin, zinc and also totally rule out anemia, all of which imbalances are rather common with PICA sufferers.
You caloric intake could be a bit low for the energy you spend.
Eating a healthy snack in the evening would probably help with your lack of energy and any possible hypoglycemia.
Is your nutrition properly balanced with adequate protein and fats?
If you want to detail all your daily meals (including approx portion size, fats used etc.), I could offer you some more insight.
Best wishes,
Niko